This volume celebrates the remarkable scholarly career of medieval historian John Van Engen with eighteen exceptional essays contributed by Van Engen's colleagues and former doctoral students, a group that includes some of the best established scholars of the Middle Ages as well as leading younger ones. Together, their work reflects the wide-ranging but coherent body of John Van Engen's own scholarship.

In a section on Christianization, Ruth Mazo Karras explores medieval marriage, Lisa Wolverton offers a new model of the Christianization of Bohemia, R. I. Moore examines the...